Mix Roma tomatoes, oil, basil, parsley and garlic.
Put several slit on each side of mushrooms, season with salt, oil and put it in a baking dish underside-up.
Put little less than ½ tomatoes mixture to mushrooms then add the onions.
Mix the oregano to the remaining tomato mixture.
Season both side of Orange Roughy with salt and pepper.
Place on a baking dish with the remaining tomato mixture divided equally between both sides. Cook mushrooms and Orange Roughy in pre-heated oven at 500 degree, when almost done add ½ of Ovolone slices to each of the dishes.

Put tomatoes (make a cross on the underside) in boiling water for 3 minutes.
Remove from water and iced down.
Peel them and pass thru a food mill.
Put oil in a small pot and sauté onions until translucent.
Add tomatoes, salt, pepper and basil.
Cook the spaghetti accordingly to package instructions in a pot with salted water.
When done, strain, add sauce and parmigian cheese.
Serve.